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Toxic Chemical BPA Traced in 91 Percent of Canadians
The Canadian Health Measures Survey of 5,600 Canadians aged six to 79 years, conducted by Statistics Canada between 2007 and 2009, found Canadian teens had the highest concentrations of BPA while the elderly had the lowest.
The average level of the estrogen-mimicking chemical in the Canadian population was small, only 1.16 parts per billion. This is a much higher concentration than natural estrogen levels found in the human body but BPA is also much less potent than estrogen, a Health Canada official said.
BPA is made from petroleum and, according to Statistics Canada, people are exposed primarily through food packaging.
Canada banned its use in baby bottles in October 2008 after tests showed it can affect neural development and behavior in laboratory animals exposed in the womb or very early in life.
Over 130 studies over the past decade have also linked even low levels of BPA to serious health problems, breast cancer, obesity and the early onset of puberty, among other disorders.
But its impact on humans is disputed, and it is still widely used in plastic water jugs, soft drink cans, hockey helmets, mobile phone housings, computers, car bumpers, carbonless papers and other consumer products.
"Health Canada has conducted a scientific screening assessment of the impact of human and environmental exposure to BPA and determined that it is of concern to human health and the environment," the study said.
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